Results 61 to 70 of about 38,854 (228)

Investigation of the In Vitro and In Vivo Metabolism and μ‐Opioid Receptor Affinity of the Nitazene N‐Pyrrolidino Fluetonitazene

Drug Testing and Analysis, EarlyView.
Eight metabolites for N‐pyrrolidino fluetonitazene were identified in vitro, three of which (M2, M6 and M8) were present in an authentic urine sample. M2 was the most abundant in vivo metabolite and is a common marker metabolite of nitazepyne‐type substances.
Severin Zemp, Gaia Alluisetti, Wolfgang Weinmann, Bettina Schrag, Frank Sporkert, Maurine Leclerc, Katharina Elisabeth Grafinger   +6 more
wiley   +1 more source

Nonhemocyte sources of selected lysosomal enzymes in Biomphalaria glabrata, B. tenagophila and B. straminea (Mollusca: Pulmonata)

Memorias do Instituto Oswaldo Cruz, 1981
The specific activities of acid phosphatase, alkaline phosphatase, β-glucuronidase, lysozymes, glutamate-oxalacetate transaminase and glutamate-pyruvate transaminate were determined in the head-foot and digestive gland of Brazilian Biomphalaria ...
Gary E. Rodrick, W. Monteiro, W. A. Sodeman Júnior   +2 more
doaj   +1 more source

Association of fecal microbial diversity and taxonomy with selected enzymatic functions. [PDF]

PLoS ONE, 2012
Few microbial functions have been compared to a comprehensive survey of the human fecal microbiome. We evaluated determinants of fecal microbial β-glucuronidase and β-glucosidase activities, focusing especially on associations with microbial alpha and ...
Roberto Flores, Jianxin Shi, Mitchell H Gail, Pawel Gajer, Jacques Ravel, James J Goedert   +5 more
doaj   +1 more source

In vivo random β-glucuronidase gene fusions in Arabidopsis thaliana

, 1991
Vectors were constructed for the isolation of random transcriptional and translational β-glucuronidase gene fusions in plants. This system is based on the random integration of the transferred DNA (T-DNA) into the plant nuclear genome.
Deboeck, Francine, Kertbundit, Sunee, Hernalsteens, Jean-Pierre, Van Montagu, Marc, De Greve, Henri   +4 more
core   +1 more source

Phase I Metabolism of Novel Phencyclidine Derivative 3‐Cl‐PCP: In Vitro Studies With Pooled Human Liver Microsomes and Investigation of a Post‐Mortem Case

Drug Testing and Analysis, EarlyView.
A fatal 3‐chloro‐phencyclidine (3‐Cl‐PCP) intoxication was investigated by analyzing postmortem samples and a pooled human liver microsomes assay. Tentative metabolite identification was performed by liquid chromatography‐quadrupole time‐of‐flight mass spectrometry (LC‐QTOF‐MS). Seven phase I metabolites were identified.
Johannes Kutzler, Tobias Veit, Thomas Keller, Volker Auwärter   +3 more
wiley   +1 more source

Bioinformatics: A rational combine approach used for the identification and in-vitro activity evaluation of potent β-Glucuronidase inhibitors.

PLoS ONE, 2018
Identification of hotspot drug-receptor interactions through in-silico prediction methods (Pharmacophore mapping, virtual screening, 3DQSAR, etc), is considered as a key approach in drug designing and development process.
Maria Yousuf, Nimra Naveed Shaikh, Zaheer Ul-Haq, M Iqbal Choudhary   +3 more
doaj   +1 more source

Flavonoid glucuronides are substrates for human liver β-glucuronidase

, 2001
Quercetin glucuronides are the main circulating metabolites of quercetin in humans. We hypothesise that the potential availability of the aglycone within tissues depends on the substrate specificity of the deconjugating enzyme β-glucuronidase towards ...
Sly, William S, O’Brien, Nora M, William S Sly, O’Leary, Karen A, Day, Andrea J, Gary Williamson, Needs, Paul W, Andrea J Day, Nora M O'Brien, Paul W Needs, Karen A O'Leary, Williamson, Gary   +11 more
core   +1 more source

In Vitro Metabolism of Δ8‐, Δ9‐, and Δ10‐THC in Human Hepatocytes: Distinct Δ10‐THC Biotransformation and Implications for Drug Testing

Drug Testing and Analysis, EarlyView.
Δ8‐THC and Δ9‐THC showed comparable metabolic profiles. In contrast, Δ10‐THC underwent extensive glucuronidation and hydroxylation, with only minor formation of a carboxy metabolite, indicating a markedly different metabolic pathway. These differences may increase the risk of misidentification and misinterpretation in cannabis drug testing.
Robert Kronstrand, Henrik Green, Markus Loh, Fabian Rüttimann, Manuela Carla Monti   +4 more
wiley   +1 more source

Synthesis, in vitro β-glucuronidase inhibition of benzoxazole bearing thiosemicarbazide derivatives along with in silico molecular docking study

Results in Chemistry
This study was aimed to design and synthesize hybrid analogues of benzoxazole bearing thiosemicarbazide analogues 1–15 as promising β-Glucuronidase inhibitory activity using D-saccharic acid 1,4-lactone as the reference inhibitor.
Fazal Rahim, Rafaqat Hussain, Shazia Subhan, Hayat Ullah, Sundas Mumtaz, Shoaib Khan, Amjad Hussain, Tayyiaba Iqbal, Naveed Iqbal, Faisal Nawaz, Obaid Ur Rahman Abid, Mounir M. Bekhit, May Salem Alnbaheen, Alanood S. Algarni, Saltanat Aghayeva   +14 more
doaj   +1 more source

Identification of Synthetic Urine by Analysis of Stable Carbon and Nitrogen Isotope Ratios and Comparison to Established GC‐MS/MS and LC‐MS/MS Analysis

Drug Testing and Analysis, EarlyView.
This study compared GC‐MS/MS, EA‐IRMS, and LC‐MS/MS for detecting synthetic and manipulated urine samples in doping control and forensic analysis. EA‐IRMS proved particularly effective for identifying mixtures of synthetic and authentic urine, providing a reliable complement to established authenticity testing methods.
Frank Hülsemann, Laura Franke, Dirk K. Wissenbach, Gregor Fußhöller, Mario Thevis   +4 more
wiley   +1 more source